*{
    margin: 0 auto;
    padding: 0;
}
body{
    background-color: #f1f2f3;
    text-align: center;
}
img{
    width: 162px;
    aspect-ratio: auto 162 / 78;
    height: 78px;
}
#CenterBox{
    position: relative;
    text-align: center;
    display: inline-block;
    max-width: 2560px;
    min-width: 1100px;
    width: 100%;
    background-color: #fff;
    overflow:hidden;
}
header{
    width: 100%;
}
footer{
    width: 100%;
    background-color: #f6f7f8;
}
.header_banner{
    position: relative;
    z-index: 0;
    /* 弹性布局 */
    display: flex;
    /* 对其方式 */
    justify-content: center;    /* 居中对齐 */
    margin: 0 auto;
    min-width: 1000px;
    min-height: 155px;
    height: 9.375vw; /* %是根据父级来设置大小 [父级大小=100%] vw是根据浏览器视窗来设置大小 [视窗大小=100vw] */
    max-height: 240px;/* 最大高度限制 */
    background-color: #e3e5e7;
    background-position: center 0;
    background-size: cover;
    background-repeat: no-repeat;
}
.header_banner>img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: inherit;
}
.mian_lazy{
    max-width: 2078px;
    min-width: 1111px;
}
.logoB{
    position: absolute;
    margin-bottom: 10px;
    z-index: 1;
    display: inline-block;
    min-height: 60px;
    width: 180px;
    height: 50%;
    text-align: left;
    left: 50px;
    bottom: 25px;
}
.logoB img{
    display: block;
}
.header_bar{
    position:fixed;
    top: 0;
    left: 0;
    width: 150px;
    z-index: 999;
    display: block;
    background-color: white;
    width: 100%;
}
.top_hov{
    
}